Enneads V.5: That Intelligible Entities Are Not External to the Intelligence of the
Puns About Vesta, Taken from the Cratylus of Plato
5. Returning to our former assertion that the First ever remains identical, even though giving birth to other beings, the generation of numbers may be explained by the immanence of Unity, and by the action of another principle which forms them, as images of unity. So much the more must the Principle superior to beings be immanent Unity; but here it is the First himself who begets the beings, and not another principle who produces beings in the image of the First while this First would abide within Himself. Likewise the form of unity, which is the principle of numbers, exists within all in different degrees, because the numbers posterior to unity participate therein unequally. Likewise, the beings inferior to the First contain something of His nature, which something constitutes their form. Numbers derive their quantity from their participation in unity. Likewise here beings owe their being to their containing the trace of the One, so that their being is the trace of the One. Not far from the truth would we be in holding that essence, which is the (more common or) plainer nomenclature of being, is derived from the word “hen,” which means one. Indeed essence proceeded immediately from the One, and has differentiated from Him but very little. Turning towards its own basis, it has settled, and both became and is the “being” of all. When a man pronounces essence (“on”), and emphasizes it, he unconsciously approximates the sound meaning one (“hen”), demonstrating that essence proceeds from unity, as indeed is indicated, so far as possible, by the word “on,” which means essence. That is why “being” (“ousia”) and essence (“einai”) imitate so far as they can the principle of the Power from which they have emanated. The human mind, observing these similarities, and guided by their contemplation, imitated what it grasped by uttering the words “on,” “einai,” “ousia,” and “hestia.” Indeed, these sounds try to express the nature of what has been begotten by unity, by means of the very effort made by the speaker so as to imitate as well as possible the generation of being.